標(biāo)題: Titlebook: Quantum Gravity, Quantum Cosmology and Lorentzian Geometries; Giampiero Esposito,Secod Corrected Book 1994Latest edition Springer-Verlag B [打印本頁] 作者: Braggart 時(shí)間: 2025-3-21 17:33
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書目名稱Quantum Gravity, Quantum Cosmology and Lorentzian Geometries讀者反饋學(xué)科排名
作者: SMART 時(shí)間: 2025-3-21 23:02 作者: 滔滔不絕地講 時(shí)間: 2025-3-22 01:08 作者: Handedness 時(shí)間: 2025-3-22 04:47
Quantum Gravity, Quantum Cosmology and Lorentzian Geometries978-3-540-47295-7Series ISSN 0940-7677 作者: Commonplace 時(shí)間: 2025-3-22 09:49 作者: Spirometry 時(shí)間: 2025-3-22 14:40 作者: yohimbine 時(shí)間: 2025-3-22 18:53
Canonical Quantum Gravitylass constraints, Dirac brackets, effective Hamiltonian, total Hamiltonian and extended Hamiltonian. On quantization, the operator versions of first-class constraints become supplementary conditions on the wave function, provided these constraints are consistent with one another and with the Schr?di作者: photopsia 時(shí)間: 2025-3-22 22:25
Perturbative Quantum Gravityface Σ to a three-metric and a field configuration on a spacelike surface Σ′. The Wick-rotated quantum amplitudes are here studied under the assumption that the analytic continuation to the real Riemannian section of the complexified space-time is possible, but this is not a generic property. Within作者: Eclampsia 時(shí)間: 2025-3-23 02:48 作者: Colonoscopy 時(shí)間: 2025-3-23 07:41
Choice of Boundary Conditions in One-Loop Quantum Cosmologycal boundary conditions. . = 1 supergravity is the simplest supersymmetric model, which we study in a background cosmological model which is flat Euclidean space bounded by a three-sphere. We pick out the physical degrees of freedom by imposing the supersymmetry constraints and choosing a gauge cond作者: expository 時(shí)間: 2025-3-23 10:55
Ghost Fields and Gauge Modes in One-Loop Quantum Cosmologyed phase-space method of Batalin, Fradkin and Vilkovisky to the spin-1 field, which is described by a constrained Hamiltonian system with first-class constraints. The charge . and the gauge-fixed action are derived. The Lorentzian path integral is restricted to the trajectories of the extended phase作者: Evocative 時(shí)間: 2025-3-23 16:53 作者: Isthmus 時(shí)間: 2025-3-23 18:15 作者: 無畏 時(shí)間: 2025-3-23 23:09 作者: 整潔漂亮 時(shí)間: 2025-3-24 03:53
Lorentzian Geometry, , Theories and Singularities in Cosmologyrelations between topology and curvature. We then define spinor structures in general relativity, and the conditions for their existence are discussed. The causality conditions are studied through an analysis of strong causality, stable causality and global hyperbolicity. In looking at the asymptoti作者: seroma 時(shí)間: 2025-3-24 08:20 作者: 小故事 時(shí)間: 2025-3-24 14:02 作者: nitric-oxide 時(shí)間: 2025-3-24 16:03
Conclusions (2) theory of SL(2,C) spinors, SU(2) spinors and the Dirac operator; (3) twistor theory in flat space and complex manifolds; (4) self-adjointness theory; (5) constrained Hamiltonian systems and path integrals in quantum field theory; (6) spinor, causal, asymptotic and Hamiltonian structure of space-time; (7) singularity theory in cosmology.作者: Anticlimax 時(shí)間: 2025-3-24 23:01 作者: 方便 時(shí)間: 2025-3-25 02:35
the ISO 14040 Life Cycle Impact Assessment (LCIA) methodology. The paper discusses the approach to adapt the selection of impact categories and category indicators, assignment of life cycle inventory results, and calculation of category indicator results from LCIA for risk impact assessment. Issues 作者: 擦掉 時(shí)間: 2025-3-25 06:50
even countries was reported. Although preparing a scientifically literate workforce was considered important; many students in rural areas do not have access to technology or resources to learn STEM subjects. Teachers are not prepared to engage students in scientific problem solving as related to su作者: 離開 時(shí)間: 2025-3-25 10:59 作者: Figate 時(shí)間: 2025-3-25 15:31 作者: conformity 時(shí)間: 2025-3-25 17:26 作者: circuit 時(shí)間: 2025-3-25 23:05 作者: 舊石器時(shí)代 時(shí)間: 2025-3-26 03:10
ustrial robots, and provides the most relevant equations and models of the energy consumption that can be used in EMP. A numerical test case is then analyzed to outline a method for designing an energy optimal motion profile and optimal scheduling in a robotic cell made by a system with constant ine作者: wreathe 時(shí)間: 2025-3-26 06:02
s imminent danger, awareness is growing and regulations are being enforced to control the way we design and produce our systems. With this increasing complexity, current design approaches are hitting their limits and require adaptation. In this perspective, we propose a conceptual framework to struc作者: 帶來 時(shí)間: 2025-3-26 09:51
nce criterion is to minimize total traveling time of the robot with the smallest consumed amount of battery energy in a given planning horizon. A mixed-integer programming (MIP) model is developed to find the optimal solutions for the problem. Two case studies are implemented at an impeller producti作者: 衣服 時(shí)間: 2025-3-26 13:17
nce criterion is to minimize total traveling time of the robot with the smallest consumed amount of battery energy in a given planning horizon. A mixed-integer programming (MIP) model is developed to find the optimal solutions for the problem. Two case studies are implemented at an impeller producti作者: 評論性 時(shí)間: 2025-3-26 19:27 作者: ungainly 時(shí)間: 2025-3-26 22:37 作者: nascent 時(shí)間: 2025-3-27 03:15
bed areas following various clean-up techniques could be studied, and the effect of different practices would then be quantitatively documented. If we are to optimize the information gathered, a greater flexibility must exist between regulatory agencies, the industry or other organization responsibl作者: 都相信我的話 時(shí)間: 2025-3-27 07:49 作者: narcotic 時(shí)間: 2025-3-27 13:04
bed areas following various clean-up techniques could be studied, and the effect of different practices would then be quantitatively documented. If we are to optimize the information gathered, a greater flexibility must exist between regulatory agencies, the industry or other organization responsibl作者: Hot-Flash 時(shí)間: 2025-3-27 15:25 作者: GRATE 時(shí)間: 2025-3-27 20:41 作者: 類似思想 時(shí)間: 2025-3-28 00:01
Quantum Gravity, Quantum Cosmology and Lorentzian Geometries作者: 即席 時(shí)間: 2025-3-28 04:18 作者: Electrolysis 時(shí)間: 2025-3-28 08:48 作者: acrimony 時(shí)間: 2025-3-28 14:17
Global Boundary Conditions and ζ(0) Value for the Massless Spin-1/2 Fieldere boundary. The corresponding ζ(0) value is obtained studying the Laplace transform of the heat equation for the squared Dirac operator, and finally deriving the asymptotic expansion of the inverse Laplace transform, i.e. the heat kernel. This squared operator arises from the study of the coupled 作者: 柔聲地說 時(shí)間: 2025-3-28 18:16
Choice of Boundary Conditions in One-Loop Quantum Cosmologythe PDF ζ(0). Namely, the PDF contribution to the prefactor due to the spin-3/2 field is proportional to . (. being the three-sphere radius), which does not cancel . due to the gravitational field subject to Dirichlet boundary conditions for the perturbed three-metric..We therefore study possible lo作者: quiet-sleep 時(shí)間: 2025-3-28 22:37
Ghost Fields and Gauge Modes in One-Loop Quantum Cosmology when expressed in terms of its physical degrees of freedom, the transverse-traceless modes. One can formally show that a suitable measure exists such that the gauge-invariant form of the path integral for the ground-state wave function is equal to the one expressed in terms of the physical degrees 作者: 滔滔不絕地講 時(shí)間: 2025-3-29 02:31 作者: CT-angiography 時(shí)間: 2025-3-29 05:37 作者: 裙帶關(guān)系 時(shí)間: 2025-3-29 08:59
